1 files changed, 43 insertions, 0 deletions
diff --git a/third_party/lisp/uax-15.nix b/third_party/lisp/uax-15.nix
new file mode 100644
index 000000000000..f98c029d3688
--- /dev/null
+++ b/third_party/lisp/uax-15.nix
@@ -0,0 +1,43 @@
+{ depot, pkgs, ... }:
+
+let
+  inherit (pkgs) runCommand;
+  inherit (depot.nix.buildLisp) bundled;
+  src = with pkgs; srcOnly lispPackages.uax-15;
+in
+depot.nix.buildLisp.library {
+  name = "uax-15";
+
+  deps = with depot.third_party.lisp; [
+    split-sequence
+    cl-ppcre
+    (bundled "asdf")
+  ];
+
+  srcs = [
+    "${src}/src/package.lisp"
+    "${src}/src/utilities.lisp"
+    "${src}/src/trivial-utf-16.lisp"
+
+    # uax-15 has runtime data files that need to have their references
+    # replaced with store paths.
+    #
+    # additionally there are some wonky variable usages of variables
+    # that are never defined, for which we patch in defvar statements.
+    (runCommand "precomputed-tables.lisp" { } ''
+      substitute ${src}/src/precomputed-tables.lisp precomputed-tables.lisp \
+        --replace "(asdf:system-source-directory (asdf:find-system 'uax-15 nil))" \
+                  '"${src}/"'
+
+      sed -i precomputed-tables.lisp \
+        -e '10i(defvar *canonical-decomp-map*)' \
+        -e '10i(defvar *compatible-decomp-map*)' \
+        -e '10i(defvar *canonical-combining-class*)'
+
+      cp precomputed-tables.lisp $out
+    '')
+
+    "${src}/src/normalize-backend.lisp"
+    "${src}/src/uax-15.lisp"
+  ];
+}